Turning 40 is a big mile-marker in life -- and one that makes you reflect on life. Host Clark Vandeventer is dealing with some big questions as he approaches his 40th birthday. In short, he's had a really hard time dealing with 40. Did he squander the promise of his youth? Why has he accomplished so much less than he thought he would have by now? In seeking some perspective, Clark has turned to people who've climbed a little higher. A series of interviews addressing deep questions with people about life after 40.